Abstract: A method of making an intumescent seal comprises: providing a tubular holder having a longitudinal bore or interior chamber defined by a thickened longitudinally extending portion of the holder contiguous with a relatively thin wall of the holder; filling the bore of the holder with solid intumescent material; and thereafter removing a longitudinally extending part of said thickened portion thereby to leave part of said thickened portion as a baffle within the holder, the space left by said removed part forming a strait having a longitudinally extending opening to the exterior of the holder and a longitudinally extending opening to the bore of the holder. Preferably the thickened portion is square or rectangular and at a corner of the holder and the removal of said part of the thickened portion leaves two webs one of which constitutes the baffle and the other being at the exterior of the holder.

Abstract: A fire-resistant seal for application to a structure, comprising a holder for securing to the structure, the holder comprising a tubular portion, a fire-resistant barrier material which swells under fire-conditions being retained within the tubular portion of the holder, the tubular portion having an elongate actual or incipient opening extending therealong, the holder also comprising a lateral extension, the lateral extension and the tubular portion of the holder together forming a groove, the opening being in the side of the groove and the lateral extension constituting a guard for the opening. The guard may serve to conceal the opening from view and/or to obstruct the introduction of a straight probe into the opening by a tamperer. When the seal is exposed to hot smoke or flame, the fire resistant barrier material swells and exudes through the opening of the seal to form a fire-resistant barrier.

Abstract: A fire-resistant seal for application to a structure e.g. a door jamb, comprises a holder of substantially tubular form for securing to the structure, and a fire-barrier material, which swells under fire conditions, retained in the holder interior. To minimize dislodgment of the material by accident or tampering, the holder has a series of small external openings distributed therealong which communicate with its interior. The total flow area of the openings at the outer surface of the holder is less than the total imperforate area of the outer surface. The holder may be a hollow strip, and the openings confined to margins which extend along one face of the strip adjacent to opposite edges of the face, or the openings may be formed on opposite faces of the strip.

Abstract: A weather sealing arrangement for a gap between first and second elongate structural members of which a door equipped with a weatherboard, and a sill, are examples, in which the weatherboard supports an elongate seal therealong which has a resiliently supported protruding portion for sealing a gap between the weatherboard and the sill when the door is in a closed condition, and the sill provides a weather strip which extends along the sill and protrudes therefrom. During hingeing movement of the door from the closed condition to an open condition, the protruding seal passes through an intermediate condition in which the seal portion traverses the weather strip so that the whole length of the seal portion is wiped by the weather strip and rainwater will tend to be wiped off the seal portion and so be kept outdoors. The weather strip is in the form of a rib which may be elastomeric and removably secured to the sill, or formed on it and be moulded with the sill.

Abstract: There is disclosed a process for assembling weather stripping which comprises continuously gaping the flanged mouth of an elongated holder inserting therein succeeding lengths of a foot portion of an elongate piece of weather stripping and thereafter continuously closing the flanged mouth to retain the weather stripping while it is in a relaxed state.

Abstract: A fire-resistant seal for gaps between a door or window and adjacent structure, comprises a tubular holder which contains a fire-resistant barrier material and has a lengthwise opening through which the material can exude when the holder is subjected to hot smoke or fire. To protect the material against a tamperer who inserts a probe into the opening, a baffle surface, which is coextensive with the opening, is provided inside the holder. The baffle surface forms with adjacent surfaces of the holder a strait which extends between the opening and the interior of the holder where the material is retained. The holder may also support an elastomeric draught excluder.